7. International L-Number-Days 2023


7. International L-Number-Days 2023

Here you can register for the L-Number-Days website. Primarily this is reserved for the participants of the L-Number-Days, but it is also possible to register as an interested party of the event. Registration is mandatory to use the exchanges.


This registration form consists of several sections. The data in the upper section (“Public data”) will then also appear in the list of participants. If you do not want your name to appear publicly on this list, please select the option “anonymous” for “Name (visible)”. The same applies to your place of residence. By default, it is displayed with the postal code (shortened by the last two digits) and the city. If you do not want this, please select the option “anonymous” for “Residence (visible)”. Then only the postal code (shortened by the last two digits) is displayed, but the place of residence is not.


Followed by a section whose data will never be published by us. The personal contact details help us if short-term changes occur and we need to reach you urgently. It has been shown to be helpful if possibly a cell phone number is also available. We need the date of birth primarily to recognize young people, as we have reduced participation fees for them. All “non-youth” are also welcome to enter a fantasy date.
In the section “Consent Contact” you can determine whether your name (on the list of participants or also in the exchanges) will be provided with a link to a contact form and you will then be sent emails by the participants through this website. If you want to place ads in the exchanges, this option is recommended.

The newsletter should be sent at irregular intervals (depending on the amount of news).

Public Data

Non Public Data

Accept Contact


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BSSW Membership

* field is mandatory